CN101943961B - Drive realization of of touch control flat-panel display - Google Patents
Drive realization of of touch control flat-panel display Download PDFInfo
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- CN101943961B CN101943961B CN200910139906.0A CN200910139906A CN101943961B CN 101943961 B CN101943961 B CN 101943961B CN 200910139906 A CN200910139906 A CN 200910139906A CN 101943961 B CN101943961 B CN 101943961B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
Abstract
The invention discloses a touch control flat-panel display, comprising a display screen, a drive circuit and the like. The output ends of a display drive circuit in the drive circuit are respectively connected with the electrode wires of the display screen through the units in a signal gate circuit or a signal loaded circuit. The units of the signal gate circuit or the signal loaded circuit are connected with a touch control excitation source through one or a plurality of circuits. Two or more display screen electrode wires are simultaneously communicated with the tough control excitation source which providing touch control excitation energy through the signal gate circuit or the signal loaded circuit, a touch control detection circuit in time sharing detects the changes of the touch control signal in the circuits of the electrode wires of the touch control excitation source connected with the display screen, and judges whether the position of each display screen electrode wire is touched or not. The circuit structure relation of the touch control detection circuit, the display drive circuit and the display screen realizes the simultaneous exertion of the touch control excitation signal to different display screen electrode wires, and controls the direction of the touch control signal, thereby achieving effective and accurate touch control position.
Description
Technical field
The present invention relates to touch screen and flat-panel monitor, relate in particular to a kind of touch control type flat-panel display.
Background technology
The patent of invention instructions that application number is 2006100948141, name is called touch control type flat-panel display, disclosed the connected mode between a kind of touch-control detection circuit and display screen electrode, by analog switch, make display screen electrode or transmission display drive signals, or transmission sensing touching signals, display driver and touch-control are surveyed time division multiplex display screen electrode, and display screen electrode had not only been surveyed for display driver but also for touch-control.The patent of invention instructions that application number is 2006101065583, name is called the flat-panel monitor with touch controllable function, disclosed the connected mode between another kind of touch-control detection circuit and display screen electrode, by signal loading circuit, make display screen electrode transmit display drive signals and transmission sensing touching signals simultaneously, display driver and touch-control are surveyed and are shared display screen electrode simultaneously, and display screen electrode had not only been surveyed for display driver but also for touch-control.The mode disclosing allows display screen and touch screen unite two into one.
Application number is the patent of invention instructions that 200810133417X, name are called a kind of touch control type flat-panel display, disclosed a kind of mode that display screen electrode wires is applied to touch-control pumping signal, by allow display screen Different electrodes line be communicated with touch-control driving source simultaneously, realization applies the mode of touch-control pumping signal simultaneously to different display screen electrode wires, to control the flow direction of touch-control pumping signal in display screen, reduce touching signals crosstalking between display screen Different electrodes line, accomplish touch-control location accurately.
On this basis, seeking touch-control detection circuit is connected with the reasonable of display driver circuit, allow the simple possible that is connected of touch-control detection circuit and display driver circuit and display screen electrode, reduce the circuit unit in touch-control detection circuit as far as possible, even having an opportunity to allow display driver circuit and touch-control detection circuit unite two into one, is again the work very with value.
Summary of the invention
The present invention is exactly in order to set up the circuit structure relation of touch-control detection circuit and display driver circuit and display screen, realize touch-control excitation and display driver and display screen electrode wires simple and direct, be rationally connected, allow display screen Different electrodes line be communicated with touch-control driving source simultaneously, realization applies touch-control excitation to different display screen electrode wires simultaneously, control the flow direction of touching signals in display screen, reduce touching signals crosstalking between display screen Different electrodes line, touch-control is accomplished effective detection, accurately located.
Technical matters of the present invention is solved by following technical scheme:
A kind of touch control type flat-panel display, mainly by display screen and driving circuit etc., formed, in driving circuit, comprise again display driver circuit and touch-control detection circuit etc., display driver circuit has provides the display drive source of display driver energy and signal to select and output circuit, signal in display driver circuit is selected and each output terminal of output circuit, the input end that connects respectively signal gating circuit or each unit of signal loading circuit, the output terminal of signal gating circuit or each unit of signal loading circuit, connects respectively each electrode wires of display screen.Each unit of signal gating circuit or each unit of signal loading circuit connect touch-control driving source by one or more circuit paths, signal gating circuit or signal loading circuit allow and are communicated with simultaneously the touch-control of touch-control excitation energy driving source is provided more than two display screen electrode wires, on the circuit paths of each electrode wires of touch-control detection circuit timesharing detection touch-control driving source connection display screen, the variation of touching signals, judges that whether the position of each display screen electrode wires is touched.
Technical matters of the present invention is further solved by following technical scheme:
According to another concrete aspect of the present invention, described each unit or each unit of signal loading circuit that allows display screen electrode wires be communicated with the signal gating circuit of touch-control driving source, to connect touch-control driving source by a circuit paths, the variation that each unit by detection signal gating circuit of touch-control detection circuit or each unit of signal loading circuit connect touching signals on touch-control driving source path, judges that whether the position of display screen electrode wires of gating touch-control driving source is touched.
According to another concrete aspect of the present invention, described each unit or each unit of signal loading circuit that allows display screen electrode wires be communicated with the signal gating circuit of touch-control driving source, to connect touch-control driving source by many circuit paths, the variation of touching signals at least one path in the mulitpath that each unit by detection signal gating circuit of touch-control detection circuit or each unit of signal loading circuit connect touch-control driving source, judges that whether the position of display screen electrode wires of gating touch-control driving source is touched.
According to another concrete aspect of the present invention, described signal gating circuit unit or signal loading circuit unit are no less than two paths that connect touch-control driving source, are to be realized and selected to be communicated with by gating circuit.
According to another concrete aspect of the present invention, described touch-control detection circuit detects the check point of touching signals, be arranged on the access path of touch-control driving source and signal gating circuit unit or signal loading circuit unit, or be arranged on the access path of signal gating circuit unit or signal loading circuit unit and display screen electrode wires.
According to another concrete aspect of the present invention, the touching signals sample circuit of described touch-control detection circuit, is passive element, or active component, or has the circuit unit of active device.
According to another concrete aspect of the present invention, described touch-control detection circuit detects and connects the touching signals at least one path in touch-control driving source mulitpath, detection be at least one in current signal and voltage signal.
According to another concrete aspect of the present invention, described touch-control detection circuit detects and connects the touching signals at least one path in touch-control driving source mulitpath, detection be at least one in amplitude, time, phase place, frequency signal and umber of pulse.
According to another concrete aspect of the present invention, the touch-control driving source of described each electrode wires of connection display screen, can be the same output terminal of same touch-control driving source, can be also the different output terminals of same touch-control driving source, can be also different touch-control driving sources.
According to another concrete aspect of the present invention, described touch-control driving source is AC power, also can is alternating current-direct current AC-battery power source, output waveform can be square wave, also can be sinusoidal wave, also can square wave or the stack ripple of sinusoidal wave and direct current, also can be other waveforms.
According to another concrete aspect of the present invention, described driving circuit is not less than 50K Hz by signal gating circuit or signal loading circuit to the frequency of the touching signals of display screen electrode wires output.
The beneficial effect that the present invention is compared with the prior art is:
The mode disclosing is the circuit structure relation of quite concrete touch-control detection circuit and display driver circuit and display screen, makes touch-control detection circuit reasonable with being connected of display driver circuit and display screen electrode.Can allow display screen Different electrodes line be communicated with touch-control driving source simultaneously, realize different display screen electrode wires are applied to touch-control pumping signal simultaneously, control the flow direction of touching signals in display screen, reduce touching signals crosstalking between display screen Different electrodes line; Can detect respectively the touching signals that flows through display screen Different electrodes line only with a small amount of touch-control detection circuit unit again, reduce volume, power consumption and the cost of many touch-controls detection circuit unit.Allow the simple possible that is connected of touch-control detection circuit and display driver circuit and display screen electrode, even have an opportunity to allow display driver circuit and touch-control detection circuit unite two into one.Set up the Rule of judgment of the polar curve that reasonably gets an electric shock, can allow touch control type flat-panel display of the present invention allow multi-point touch simultaneously.
Accompanying drawing explanation
Fig. 1 is the electrical connection schematic diagram of the specific embodiment of the invention one;
Fig. 2 is the electrical connection schematic diagram of the specific embodiment of the invention two;
Fig. 3 is the electrical connection schematic diagram of the specific embodiment of the invention three;
Fig. 4 is the electrical connection schematic diagram of the specific embodiment of the invention four;
Fig. 5 is the electrical connection schematic diagram of the specific embodiment of the invention five;
Fig. 6 is the electrical connection schematic diagram of the specific embodiment of the invention six;
Fig. 7 is the electrical connection schematic diagram of the specific embodiment of the invention seven;
Fig. 8 is the electrical connection schematic diagram of the specific embodiment of the invention eight;
Fig. 9 is the electrical connection schematic diagram of the specific embodiment of the invention nine;
Embodiment
Flat-panel monitor has multiple, the liquid crystal display (LCD) of take is example, passive liquid crystal display, such as distortion (Twist Nematic, be called for short TN) type liquid crystal display (TN-LCD) and supertwist (Super Twist Nematic, be called for short STN) type liquid crystal display (STN-LCD), on general lower baseplate glass, there is reading scan electrode wires or display electrode wires (being row electrode lines), upper substrate is on glass has display electrode wires or reading scan electrode wires (i.e. row electrode wires), and cross section is display element.Active-matrix liquid crystal display, such as thin film transistor (TFT) (Thin Film Transistor, abbreviation TFT) liquid crystal display (TFT-LCD) generally comprises tft array, the display element array being positioned on a base plate glass, the reading scan electrode wires being extremely connected with the Gate of TFT (being row electrode lines), with the source electrode of TFT or the display electrode wires (i.e. row electrode wires) that drains and be connected; With the color filter film and the public electrode that are positioned on another base plate glass.And other flat-panel monitors such as plasma display (PDP), active and passive organic light emitting diode display (OLED) have reading scan electrode wires and display electrode wires (being ranks electrode wires) equally.
Disclosed touch control type flat-panel display, is comprised of display screen and driving circuit etc., comprises again display driver circuit and touch-control detection circuit etc. in driving circuit, and each output terminal of driving circuit connects respectively each strip electrode line of display screen.Rely on the touch-control detection circuit being connected with display driver circuit, the row-column electrode line of flat-panel monitor is carried out to touch-control detection, display driver and touch-control are surveyed multiplexing display screen electrode, allow flat-panel monitor realize touch-control normal demonstration and survey.
Embodiment one
Touch control type flat-panel display 100 as shown in Figure 1, comprises display screen 110, driving circuit 120.Driving circuit 120 comprises control circuit 121, the display drive source 122 of display driver energy is provided, provide touch-control excitation energy touch-control driving source 123, signal selects and output circuit 124, touch-control detection circuit 125, signal gating circuit 126 etc.Display screen 110 has display screen line electrode 111 and row electrode 112 etc.Signal is selected to be connected display drive source 122 with the input end of output circuit 124; Signal select with each output terminal of output circuit 124 be connected respectively signal gating circuit 126 each gating circuit unit 1261,1262 ..., 126n an input end; Each gating circuit unit 1261,1262 ..., 126N another input end, respectively the touching signals sampling unit 131,132 by touch-control detection circuit 125 ..., 13n connects touch-control driving source 123; Each touching signals sampling unit 131,132 ..., 13n connects touch-control detection circuit 125, touch-control detection circuit 125 detects the variation of touching signals on sampling units; Signal gating circuit 126 each gating circuit unit 1261,1262 ..., 126n output terminal, connect respectively each electrode wires of display screen line electrode 111 and row electrode 112.
Control circuit 121 allows signal gating circuit 126 make each electrode wires of display screen, or be communicated with each output terminal of signal selection and output circuit 124, signal is selected to be connected display screen line electrode 111 and row electrode 112 each electrode wires, to carry display drive signals with output circuit 124; Or be communicated with touch-control driving source 123, touch-control driving source 123 applies touch-control pumping signal to connected display screen line electrode 111 and row electrode 112 each electrode wires.Each in Fig. 1 connecting line, has more than and represents that single line connects, and also represents multi-thread annexation.
Above-mentioned touch control type flat-panel display is worked as follows:
In the display driver period, signal gating circuit 126 in driving circuit 120, each electrode wires of display screen is communicated with each output terminal of signal selection and output circuit 124, control circuit 121 allows signal select to be connected display screen line electrode 111 and row electrode 112, to carry display drive signals with output circuit 124, and display screen 110 is in display driver state.
At touch-control, survey the period, control circuit 121 allows signal gating circuit 126, make each electrode wires of display screen respectively by each touching signals sampling unit 131,132 ..., 13n is communicated with touch-control driving source 123, touch-control driving source 123 applies touch-control pumping signal to each electrode wires of display screen line electrode 111 and row electrode 112 simultaneously.Touch-control detection circuit 125 by detect each touching signals sampling unit 131,132 ..., the upper touching signals of 13n variation, judge whether display screen 110 is touched, the position of which row-column electrode line is touched, display screen 110 is in touch-control acquisition mode.By what detect, touched row electrode lines and by the point of crossing of tactile row electrode wires, determined by contact position.
Allow touch control type flat-panel display 100 intersegmental conversion when display driver period and touch-control are surveyed repeatedly, display driver and touch-control are surveyed time division multiplex display screen electrode, form the touch control type flat-panel display that not only can show but also can touch-control.
Judge the condition of the polar curve that gets an electric shock, the touching signals variation of flowing through electrode wires maximum, that also surpass certain setting threshold can be detected is the polar curve that gets an electric shock; Can the touching signals of flowing through to be detected, not change electrode wires maximum, that also surpass certain setting threshold for the polar curve that gets an electric shock yet, and only with detect the touching signals of flowing through change surpass certain setting threshold electrode wires for geting an electric shock polar curve, allow touch control type flat-panel display allow while multi-point touch.
Making display screen electrode or be communicated with transmission display drive signals with display driver circuit or be communicated with the signal gating circuit that transmits touching signals with touch-control detection circuit, can be multiway analog switch, can be also other circuit that play gate action.
Touching signals sampling unit can be the passive device of single resistance or electric capacity or inductance, can be also the combination of multiple passive device, can be also single active device, can be also the circuit unit with active device.
Embodiment two
Touch control type flat-panel display 200 as shown in Figure 2, comprises display screen 210, driving circuit 220.Driving circuit 220 comprises control circuit 221, the display drive source 222 of display driver energy is provided, provide touch-control excitation energy touch-control driving source 223, signal selects and output circuit 224, touch-control detection circuit 225, analog switch group 226 etc.Display screen 210 has display screen line electrode 211 and row electrode 212 etc.Signal is selected to be connected display drive source 222 with the input end of output circuit 224; Each output terminal of signal selection and output circuit 224 is an input end of connecting analog switches set 226 each analog switches respectively; Another input end of analog switch group 226 each analog switches connects respectively touch-control driving source 223; The output terminal of analog switch group 226 each analog switches, connects respectively each electrode wires of display screen line electrode 211 and row electrode 212.On the tie point between analog switch group 226 and touch-control driving source 223, setting correspond respectively to the touch-control detection circuit 225 of each electrode wires of display screen touching signals sampled point 231,232 ..., 23n, connect touch-control detection circuit 225, touch-control detection circuit 225 detects the variation of current potential on touching signals sampled point; The reference end points of potential measurement, can be located at the common of driving circuit 220, also can be located at a certain specific reference point of driving circuit 220.Control circuit 221 allows analog switch group 226 make each electrode wires of display screen, or be communicated with each output terminal of signal selection and output circuit 224, signal is selected to be connected display screen line electrode 211 and row electrode 212 each electrode wires, to carry display drive signals with output circuit 224; Or be communicated with touch-control driving source 223, touch-control driving source 223 applies touch-control pumping signal to connected display screen line electrode 211 and row electrode 212 each electrode wires.Each in Fig. 2 connecting line, has more than and represents that single line connects, and also represents multi-thread annexation.
Above-mentioned touch control type flat-panel display is worked as follows:
In the display driver period, analog switch group 226 in driving circuit 220, each electrode wires of display screen is communicated with each output terminal of signal selection and output circuit 224, control circuit 221 allows signal select to be connected display screen line electrode 211 and row electrode 212, to carry display drive signals with output circuit 224, and display screen 210 is in display driver state.
At touch-control, survey the period, control circuit 221 allows analog switch group 226, and each electrode wires of display screen is communicated with touch-control driving source 223, and touch-control driving source 223 applies touch-control pumping signal to each electrode wires of display screen line electrode 211 and row electrode 212 simultaneously.Touch-control detection circuit 225 by detect each touching signals sampled point 231,232 ..., the upper touching signals of 23n variation, judge whether display screen 210 is touched, the position of which row-column electrode line is touched, display screen 210 is in touch-control acquisition mode.By what detect, touched row electrode lines and by the point of crossing of tactile row electrode wires, determined by contact position.
Allow touch control type flat-panel display 200 intersegmental conversion when display driver period and touch-control are surveyed repeatedly, display driver and touch-control are surveyed time division multiplex display screen electrode, form the touch control type flat-panel display that not only can show but also can touch-control.
Judge the condition of the polar curve that gets an electric shock, the touching signals variation of flowing through electrode wires maximum, that also surpass certain setting threshold can be detected is the polar curve that gets an electric shock; Can the touching signals of flowing through to be detected, not change electrode wires maximum, that also surpass certain setting threshold for the polar curve that gets an electric shock yet, and only with detect the touching signals of flowing through change surpass certain setting threshold electrode wires for geting an electric shock polar curve, allow touch control type flat-panel display allow while multi-point touch.
Embodiment three
Touch control type flat-panel display 300 as shown in Figure 3, comprises display screen 310, driving circuit 320.Driving circuit 320 comprises control circuit 321, the display drive source 322 of display driver energy is provided, provides the touch-control driving source 323 of touch-control excitation energy, signal to select and output circuit 324, touch-control detection circuit 325, analog switch group 326 and analog switch group 327 etc.Display screen 310 has display screen line electrode 311 and row electrode 312 etc.Signal is selected to be connected display drive source 322 with the input end of output circuit 324; Each output terminal of signal selection and output circuit 324 is an input end of connecting analog switches set 326 each analog switches respectively; Another input end of analog switch group 326 each analog switches, respectively the touching signals sampling unit 331,332 by touch-control detection circuit 325 ..., 33n together connects touch-control driving source 323; The output terminal of analog switch group 326 each analog switches, connects respectively each electrode wires of display screen line electrode 311 and row electrode 312.Analog switch group 326 and each touching signals sampling unit 331,332 ..., on the tie point between 33n, setting corresponds respectively to the touching signals sampled point of each electrode wires of display screen, each analog switch by analog switch group 327 connects touch-control detection circuit 325 again, and touch-control detection circuit 325 detects the variation of current potential on sampled point; The reference end points of potential measurement, can be located at the common of driving circuit 320, also can be located at a certain specific reference point of driving circuit 320.Control circuit 321 allows analog switch group 326 make each electrode wires of display screen, or be communicated with each output terminal of signal selection and output circuit 324, signal is selected to be connected display screen line electrode 311 and row electrode 312 each electrode wires, to carry display drive signals with output circuit 324; Or be communicated with touch-control driving source 323, touch-control driving source 323 applies touch-control pumping signal to connected display screen line electrode 311 and row electrode 312 each electrode wires.Each in Fig. 3 connecting line, has more than and represents that single line connects, and also represents multi-thread annexation.
Above-mentioned touch control type flat-panel display is worked as follows:
In the display driver period, analog switch group 326 in driving circuit 320, each electrode wires of display screen is communicated with each output terminal of signal selection and output circuit 324, control circuit 321 allows signal select to be connected display screen line electrode 311 and row electrode 312, to carry display drive signals with output circuit 324, and display screen 310 is in display driver state.
At touch-control, survey the period, control circuit 321 allows analog switch group 326, and each electrode wires of display screen is communicated with touch-control driving source 323, and touch-control driving source 323 applies touch-control pumping signal to each electrode wires of display screen line electrode 311 and row electrode 312 simultaneously.Control circuit 321 allows analog switch group 327, make analog switch group 326 and each touching signals sampling unit 331,332 ..., the touching signals sampled point between 33n, be communicated with touch-control detection circuit 325 one by one, touch-control detection circuit 325 is by detecting one by one the variation of touching signals on each touching signals sampled point, judge whether display screen 310 is touched, the position of which row-column electrode line is touched, display screen 310 is in touch-control acquisition mode.By what detect, touched row electrode lines and by the point of crossing of tactile row electrode wires, determined by contact position.
Allow touch control type flat-panel display 300 intersegmental conversion when display driver period and touch-control are surveyed repeatedly, display driver and touch-control are surveyed time division multiplex display screen electrode, form the touch control type flat-panel display that not only can show but also can touch-control.
Judge the condition of the polar curve that gets an electric shock, the touching signals variation of flowing through electrode wires maximum, that also surpass certain setting threshold can be detected is the polar curve that gets an electric shock; Can the touching signals of flowing through to be detected, not change electrode wires maximum, that also surpass certain setting threshold for the polar curve that gets an electric shock yet, and only with detect the touching signals of flowing through change surpass certain setting threshold electrode wires for geting an electric shock polar curve, allow touch control type flat-panel display allow while multi-point touch.
Touching signals sampling unit can be the passive device of single resistance or electric capacity or inductance, can be also the combination of multiple passive device, can be also single active device, can be also the circuit unit with active device.
Embodiment four
Touch control type flat-panel display 400 as shown in Figure 4, comprises display screen 410, driving circuit 420.Driving circuit 420 comprises control circuit 421, the display drive source 422 of display driver energy is provided, provide touch-control excitation energy touch-control driving source 423, signal selects and output circuit 424, touch-control detection circuit 425, analog switch group 426 etc.Display screen 410 has display screen line electrode 411 and row electrode 412 etc.Signal is selected to be connected display drive source 422 with the input end of output circuit 424; Each output terminal of signal selection and output circuit 424 is an input end of each analog switch of connecting analog switches set 426 respectively; Another input end of each analog switch together connects touch-control driving source 423; The output terminal of analog switch group 426 each analog switches, connects respectively each electrode wires of display screen line electrode 411 and row electrode 412.On the tie point of analog switch group 426 and display screen 410 each electrode wires, setting correspond respectively to the touch-control detection circuit 425 of each electrode wires of display screen sampled point 431,432 ..., 43n, connect touch-control detection circuit 425, touch-control detection circuit 425 detects the variation of current potential on sampled point; The reference end points of potential measurement, can be located at the common of driving circuit 420, also can be located at a certain specific reference point of driving circuit 420.Control circuit 421 allows analog switch group 426 make each electrode wires of display screen, or be communicated with each output terminal of signal selection and output circuit 424, signal is selected to be connected display screen line electrode 411 and row electrode 412 each electrode wires, to carry display drive signals with output circuit 424; Or be communicated with touch-control driving source 423, touch-control driving source 423 applies touch-control pumping signal to connected display screen line electrode 411 and row electrode 412 each electrode wires.Each in Fig. 4 connecting line, has more than and represents that single line connects, and also represents multi-thread annexation.
Above-mentioned touch control type flat-panel display is worked as follows:
In the display driver period, analog switch group 426 in driving circuit 420, each electrode wires of display screen is communicated with each output terminal of signal selection and output circuit 424, control circuit 421 allows signal select to be connected display screen line electrode 411 and row electrode 412, to carry display drive signals with output circuit 424, and display screen 410 is in display driver state.
At touch-control, survey the period, control circuit 421 allows analog switch group 426, and each electrode wires of display screen line is communicated with touch-control driving source 423, and touch-control driving source 423 applies touch-control pumping signal to each electrode wires of display screen line electrode 411 and row electrode 412 simultaneously.Touch-control detection circuit 425 by detect each sampled point 431,432 ..., the upper touching signals of 43n variation, judge whether display screen 410 is touched, the position of which row-column electrode line is touched, display screen 410 is in touch-control acquisition mode.By what detect, touched row electrode lines and by the point of crossing of tactile row electrode wires, determined by contact position.
Allow touch control type flat-panel display 400 intersegmental conversion when display driver period and touch-control are surveyed repeatedly, display driver and touch-control are surveyed time division multiplex display screen electrode, form the touch control type flat-panel display that not only can show but also can touch-control.
Judge the condition of the polar curve that gets an electric shock, the touching signals variation of flowing through electrode wires maximum, that also surpass certain setting threshold can be detected is the polar curve that gets an electric shock; Can the touching signals of flowing through to be detected, not change electrode wires maximum, that also surpass certain setting threshold for the polar curve that gets an electric shock yet, and only with detect the touching signals of flowing through change surpass certain setting threshold electrode wires for geting an electric shock polar curve, allow touch control type flat-panel display allow while multi-point touch.
Embodiment five
Touch control type flat-panel display 500 as shown in Figure 5, comprises display screen 510, driving circuit 520.Driving circuit 520 comprises control circuit 521, the display drive source 522 of display driver energy is provided, provides the touch-control driving source 523 of touch-control excitation energy, signal to select and output circuit 524, touch-control detection circuit 525, analog switch group 526 and analog switch group 527 etc.Display screen 510 has display screen line electrode 511 and row electrode 512 etc.Signal is selected to be connected display drive source 522 with the input end of output circuit 524; Each output terminal of signal selection and output circuit 524 is an input end of each analog switch of connecting analog switches set 526 respectively; Another input end of each analog switch together connects touch-control driving source 523; The output terminal of analog switch group 526 each analog switches, connects respectively each electrode wires of display screen line electrode 511 and row electrode 512.On the tie point between analog switch group 526 and display screen 510 each electrode wires, setting correspond respectively to each electrode wires of display screen touching signals sampled point 531,532 ..., 53n, each analog switch by analog switch group 527 connects touch-control detection circuit 525 again, and touch-control detection circuit 525 detects the variation of current potential on sampled point; The reference end points of potential measurement, can be located at the common of driving circuit 520, also can be located at a certain specific reference point of driving circuit 520.Control circuit 521 allows analog switch group 526 make each electrode wires of display screen, or be communicated with each output terminal of signal selection and output circuit 524, signal is selected to be connected display screen line electrode 511 and row electrode 512 each electrode wires, to carry display drive signals with output circuit 524; Or be communicated with touch-control driving source 523, touch-control driving source 523 applies touch-control pumping signal to connected display screen line electrode 511 and row electrode 512 each electrode wires.Each in Fig. 5 connecting line, has more than and represents that single line connects, and also represents multi-thread annexation.
Above-mentioned touch control type flat-panel display is worked as follows:
In the display driver period, analog switch group 526 in driving circuit 520, each electrode wires of display screen is communicated with each output terminal of signal selection and output circuit 524, control circuit 521 allows signal select to be connected display screen line electrode 511 and row electrode 512, to carry display drive signals with output circuit 524, and display screen 510 is in display driver state.
At touch-control, survey the period, control circuit 521 allows analog switch group 526, and each electrode wires of display screen is communicated with touch-control driving source 523, and touch-control driving source 523 applies touch-control pumping signal to each electrode wires of display screen line electrode 511 and row electrode 512 simultaneously.Control circuit 521 allows analog switch group 527, make each analoging switch output end of analog switch group 526 and the touching signals sampled point between display screen 510 each electrode wires, be communicated with touch-control detection circuit 525 one by one, touch-control detection circuit 525 is by detecting one by one the variation of touching signals on each touching signals sampled point, judge whether display screen 510 is touched, the position of which row-column electrode line is touched, display screen 510 is in touch-control acquisition mode.By what detect, touched row electrode lines and by the point of crossing of tactile row electrode wires, determined by contact position.
Allow touch control type flat-panel display 500 intersegmental conversion when display driver period and touch-control are surveyed repeatedly, display driver and touch-control are surveyed time division multiplex display screen electrode, form the touch control type flat-panel display that not only can show but also can touch-control.
Judge the condition of the polar curve that gets an electric shock, the touching signals variation of flowing through electrode wires maximum, that also surpass certain setting threshold can be detected is the polar curve that gets an electric shock; Can the touching signals of flowing through to be detected, not change electrode wires maximum, that also surpass certain setting threshold for the polar curve that gets an electric shock yet, and only with detect the touching signals of flowing through change surpass certain setting threshold electrode wires for geting an electric shock polar curve, allow touch control type flat-panel display allow while multi-point touch.
Embodiment six
Touch control type flat-panel display 600 as shown in Figure 6, comprises display screen 610, driving circuit 620.Driving circuit 620 comprises control circuit 621, the display drive source 622 of display driver energy is provided, provides the touch-control driving source 623 of touch-control excitation energy, signal to select and output circuit 624, touch-control detection circuit 625, analog switch group 626, analog switch group 627 and analog switch group 628 etc.Display screen 610 has display screen line electrode 611 and row electrode 612 etc.Signal is selected to be connected display drive source 622 with the input end of output circuit 624; Each output terminal of signal selection and output circuit 624 is an input end of connecting analog switches set 626 each analog switches respectively; Another input end of each analog switch together connects touch-control driving source 623; The output terminal of analog switch group 626 each analog switches, connects respectively each electrode wires of display screen line electrode 611 and row electrode 612.On the tie point between analog switch group 626 and display screen 610 each electrode wires, arrange correspond respectively to each electrode wires of display screen touching signals sampled point 631,632 ..., 63i, 63i+1 ..., 63n; Touching signals sampled point 631 ..., 63i connects touch-control detection circuit 625 ports 6251 by each analog switch of analog switch group 627, touching signals sampled point 63i+1 ..., 63n connects touch-control detection circuit 625 ports 6252 by each analog switches of analog switch group 628, detection circuit 625 detects the variation of current potential on sampled points; The reference end points of potential measurement, can be located at the common of driving circuit 620, also can be located at a certain specific reference point of driving circuit 620.Control circuit 621 allows analog switch group 626 make each electrode wires of display screen, or be communicated with each output terminal of signal selection and output circuit 624, signal is selected to be connected display screen line electrode 611 and row electrode 612 each electrode wires, to carry display drive signals with output circuit 624; Or be communicated with touch-control driving source 623, touch-control driving source 623 applies touch-control pumping signal to connected display screen line electrode 611 and row electrode 612 each electrode wires.Each in Fig. 6 connecting line, has more than and represents that single line connects, and also represents multi-thread annexation.
Above-mentioned touch control type flat-panel display is worked as follows:
In the display driver period, analog switch group 626 in driving circuit 620, each electrode wires of display screen is communicated with each output terminal of signal selection and output circuit 624, control circuit 621 allows signal select to be connected display screen line electrode 611 and row electrode 612, to carry display drive signals with output circuit 624, and display screen 610 is in display driver state.
At touch-control, survey the period, control circuit 621 allows analog switch group 626, and each electrode wires of display screen is communicated with touch-control driving source 623, and touch-control driving source 623 applies touch-control pumping signal to each electrode wires of display screen line electrode 611 and row electrode 612 simultaneously.Control circuit 621 allows analog switch group 627, make touching signals sampled point 631 between analog switch group 626 output terminals and display screen 610 electrode wires ..., 63i, the port 6251 that is communicated with one by one touch-control detection circuit 625, touch-control detection circuit 625 detect one by one touching signals sampled point 631 ..., the variation of touching signals on 63i each point; Simultaneously, control circuit 621 also allows analog switch group 628, make touching signals sampled point 63i+1 between analog switch group 626 output terminals and display screen 610 electrode wires ..., 63n, the port 6252 that is communicated with one by one touch-control detection circuit 625, touch-control detection circuit 625 detect one by one touching signals sampled point 63i+1 ..., the variation of touching signals on 63n each point; Touch-control detection circuit 625 is by the mode of Grouping scan, detect respectively touching signals sampled point 631 to 63i and 63i+1 to the variation of the upper touching signals of 63n, judge whether display screen 610 is touched, the position of which row-column electrode line is touched, display screen 610 is in touch-control acquisition mode.By what detect, touched row electrode lines and by the point of crossing of tactile row electrode wires, determined by contact position.
Allow touch control type flat-panel display 600 intersegmental conversion when display driver period and touch-control are surveyed repeatedly, display driver and touch-control are surveyed time division multiplex display screen electrode, form the touch control type flat-panel display that not only can show but also can touch-control.
By touching signals sampled point 631,632 ..., 63i, 63i+1 ..., 63n divides two groups, carries out scanning probe touching signals simultaneously, than not dividing into groups, carry out scanning probe touching signals and will save time.If touching signals sampled point is divided into more groups, carry out respectively scanning probe simultaneously, just can allow the touch-control detection period become shorter, the display driver period becomes longer, is conducive to avoid touch-control to survey the impact on display effect.
Judge the condition of the polar curve that gets an electric shock, the touching signals variation of flowing through electrode wires maximum, that also surpass certain setting threshold can be detected is the polar curve that gets an electric shock; Can the touching signals of flowing through to be detected, not change electrode wires maximum, that also surpass certain setting threshold for the polar curve that gets an electric shock yet, and only with detect the touching signals of flowing through change surpass certain setting threshold electrode wires for geting an electric shock polar curve, allow touch control type flat-panel display allow while multi-point touch.
Embodiment seven
Touch control type flat-panel display 700 as shown in Figure 7, comprises the active display screen 710 of thin film transistor (TFT) (TFT), driving circuit 720.Driving circuit 720 comprises control circuit 721, the display drive source 722 of display driver energy is provided, provide touch-control excitation energy touch-control driving source 723, signal selects and output circuit 724, touch-control detection circuit 725, analog switch group 726 and 727 etc.Display screen 710 has display screen line electrode 711, row electrode 712 and public electrode 713 etc.Signal is selected to be connected display drive source 722 with the input end of output circuit 724; Each output terminal of signal selection and output circuit 724 is an input end of connecting analog switches set 726 each analog switches respectively; Another input end of analog switch group 726 each analog switches is the output terminal of connecting analog switches set 727 each analog switches respectively; The output terminal of analog switch group 726 each analog switches, connects respectively each electrode wires and the public electrode 713 of display screen line electrode 711 and row electrode 712; An input end of analog switch group 727 each analog switches, through the touching signals sampling element 731 connection touch-control driving sources 723 of touch-control detection circuit 725, another input end together directly connects touch-control driving source 723; Touching signals sampling element 731 connects touch-control detection circuit 725, and touch-control detection circuit 725 detects the variation of touching signals on sampling element.Control circuit 721 allows analog switch group 726 make each electrode wires of display screen, or be communicated with each output terminal of signal selection and output circuit 724, signal is selected with output circuit 724 to be connected display screen line electrode 711 and row electrode 712 each electrode wires and public electrode 713 conveying display drive signals; Or be communicated with touch-control driving source 723, touch-control driving source 723 applies touch-control pumping signal to connected display screen line electrode 711 and row electrode 712 each electrode wires and public electrode 713.Each in Fig. 7 connecting line, has more than and represents that single line connects, and also represents multi-thread annexation.
Above-mentioned touch control type flat-panel display is worked as follows:
In the display driver period, analog switch group 726 in driving circuit 720, each electrode wires of display screen is communicated with each output terminal of signal selection and output circuit 724, control circuit 721 allows signal select to be connected display screen line electrode 711, row electrode 712 and public electrode 713, to carry display drive signals with output circuit 724, and display screen 710 is in display driver state.
At touch-control, survey the period, control circuit 721 allows analog switch group 726, make each electrode of display screen all be communicated with analog switch group 727, again by analog switch group 727, only allow a display screen electrode wires at every turn, also can allow many display screen electrode wires at every turn, by touching signals sampling element 731, be communicated with touch-control driving source 723; Remaining display screen electrode is directly communicated with touch-control driving source 723; Touch-control detection circuit 725 is by successively detecting the variation of touching signals on touching signals sampling element 731, judges whether display screen 710 is touched, the position of which row-column electrode line is touched, and display screen 710 is in touch-control acquisition mode.By what detect, touched row electrode lines and by the point of crossing of tactile row electrode wires, determined by contact position.
Allow touch control type flat-panel display 700 intersegmental conversion when display driver period and touch-control are surveyed repeatedly, display driver and touch-control are surveyed time division multiplex display screen electrode, form the touch control type flat-panel display that not only can show but also can touch-control.
Judge the condition of the polar curve that gets an electric shock, the touching signals variation of flowing through electrode wires maximum, that also surpass certain setting threshold can be detected is the polar curve that gets an electric shock; Can the touching signals of flowing through to be detected, not change electrode wires maximum, that also surpass certain setting threshold for the polar curve that gets an electric shock yet, and only with detect the touching signals of flowing through change surpass certain setting threshold electrode wires for geting an electric shock polar curve, allow touch control type flat-panel display allow while multi-point touch.
Touching signals sampling unit can be the passive device of single resistance or electric capacity or inductance, can be also the combination of multiple passive device, can be also single active device, can be also the circuit unit with active device.
Embodiment eight
Touch control type flat-panel display 800 as shown in Figure 8, comprises the active display screen 810 of thin film transistor (TFT) (TFT), driving circuit 820.Driving circuit 820 comprises control circuit 821, the display drive source 822 of display driver energy is provided, provide touch-control excitation energy touch-control driving source 823, signal selects and output circuit 824, touch-control detection circuit 825, analog switch group 826, analog switch group 8271,8272,8273 and 8274 etc.Display screen 810 has tft array column electrode 811, row electrode 812 and public electrode 813 etc.Signal is selected to be connected display drive source 822 with the input end of output circuit 824; Each output terminal of signal selection and output circuit 824 is an input end of connecting analog switches set 826 each analog switches respectively; Another input end of analog switch group 826 each analog switches divides each output terminal of four groups of difference connecting analog switches set 8271,8272,8273 and 8274 each switches; An input end of analog switch group 8271,8272,8273 and 8274 each switches is connected touch-control driving source 823 through the touching signals sampling element 831,832,833 of touch-control detection circuit 825 respectively with 834, another input end of analog switch group 8271,8272,8273 and 8274 each switches is together directly connected touch-control driving source 823.On the end points of touching signals sampling element 831,832,833 and 834 connecting analog switches set 8271,8272,8273 and 8274, sampled point is set and connects touch-control detection circuit 825.Touch-control detection circuit 825 detects the variation of current potential on sampled point; The reference end points of potential measurement, can be located at another end points (being the output terminal of touch-control driving source 823) of touching signals sampling element 831,832,833 and 834, also can be located at the common of driving circuit 820; Also can be located at a certain specific reference point of driving circuit 820.Control circuit 821 allows analog switch group 826 and analog switch group 8271,8272,8273,8274 make each electrode wires of display screen, or be communicated with each output terminal of signal selection and output circuit 824, signal is selected with output circuit 824 to be connected display screen line electrode 811 and row electrode 812 each electrode wires and public electrode 813 conveying display drive signals; Or be communicated with touch-control driving source 823, touch-control driving source 823 applies touch-control pumping signal to connected display screen line electrode 811 and row electrode 812 each electrode wires and public electrode 813.Each in Fig. 8 connecting line, has more than and represents that single line connects, and also represents multi-thread annexation.
Above-mentioned touch control type flat-panel display is worked as follows:
In the display driver period, analog switch group 826 in driving circuit 820, each electrode wires of display screen is communicated with each output terminal of signal selection and output circuit 824, control circuit 821 allows signal select to be connected display screen line electrode 811, row electrode 812 and public electrode 813, to carry display drive signals with output circuit 824, and display screen 810 is in display driver state.
At touch-control, survey the period, control circuit 821 allows analog switch group 826, make each electrode of display screen divide four groups of connecting analog switches set 8271,8272,8273 and 8274 respectively, 8271,8272,8273 and 8274 part (one or more) the display screen electrode wires that all at every turn only allow in every group, are communicated with touch-control driving source 823 by touching signals sampling element 831,832,833 and 834 respectively; Remaining display screen electrode wires is directly communicated with touch-control driving source 823; Touch-control detection circuit 825 is by detecting respectively the variation of touching signals on each sampled point, touch-control detection is carried out in a plurality of regions of display screen 810 simultaneously, judge whether display screen 810 is touched, which region is touched, the position of which row-column electrode line is touched, and display screen 810 is in touch-control acquisition mode.By what detect, touched row electrode lines and by the point of crossing of tactile row electrode wires, determined by contact position.
Allow touch control type flat-panel display 800 intersegmental conversion when display driver period and touch-control are surveyed repeatedly, display driver and touch-control are surveyed time division multiplex display screen electrode, form the touch control type flat-panel display that not only can show but also can touch-control.
Touch-control detection is carried out in a plurality of regions of display screen simultaneously, can save the full frame touch-control that carries out of display screen is surveyed to required time, allow the touch-control detection period become shorter, the display driver period becomes longer, is conducive to avoid touch-control to survey the impact on display effect.
Embodiment nine
Touch control type flat-panel display 900 as shown in Figure 9, comprises passive display screen 910, driving circuit 920.Driving circuit 920 comprises control circuit 921, the display drive source 922 of display driver energy is provided, provides the touch-control driving source 923 of touch-control excitation energy, signal to select and output circuit 924, touch-control detection circuit 925, signal loading circuit group 926 and analog switch group 927 etc.Display screen 910 has display screen line electrode 911 and row electrode 912 etc.Display drive source 922 is used direct supply, and touch-control driving source 923 is used the AC power of upper frequency (as being greater than 50K Hz).Signal is selected to be connected display drive source 922 with the input end of output circuit 924; Signal select with each output terminal of output circuit 924 be connected respectively signal loading circuit group 926 each signal loading circuit units 9261,9262 ..., 926n an input end, signal loading circuit group 926 each signal loading circuit units 9261,9262 ..., 926n another input end output terminal of connecting analog switches set 927 each analog switches respectively; Signal loading circuit group 926 each signal loading circuit units 9261 ..., 926N output terminal, connect respectively each electrode wires of display screen line electrode 911 and row electrode 912; An input end of analog switch group 927 each switches connects touch-control driving source 923 through the touching signals sampling resistor 931 of touch-control detection circuit 925, and another input end connects touch-control driving source 923 through balance resistance 932.On the end points of touching signals sampling element 931 connecting analog switches set 927, sampled point is set, connects touch-control detection circuit 925.Touch-control detection circuit 925 detects the variation of current potential on sampled point, the reference end points of potential measurement, can be located at another end points (being the output terminal of touch-control driving source 923) of touching signals sampling element 931, also can be located at the end points of balance resistance 932 connecting analog switches set 927, also can be located at the common of driving circuit 920, also can be located at a certain specific reference point of driving circuit 920.Signal loading circuit group 926 and analog switch group 927, make display drive source 922 and exchange touch-control driving source 923 mixed signals and be applied in each electrode wires of display screen line electrode 911 and row electrode 912.Each in Fig. 9 connecting line, has more than and represents that single line connects, and also represents multi-thread annexation.
Above-mentioned touch control type flat-panel display, can survey the mode of simultaneously carrying out with display driver and touch-control and work:
Control circuit 921 is only selected a switch in analog switch group 927 each analog switches at every turn, is communicated with the touch-control driving source 923 of high frequency by touching signals sampling resistor 931, and rest switch is also communicated with the touch-control driving source 923 of high frequency by balance resistance 932.Signal loading circuit group 926 each signal loading circuit units, to derive from the mixed signal of low frequency display drive signals and the high frequency touching signals of display drive source 922 and touch-control driving source 923, be applied to simultaneously on the display screen line electrode 911 and row electrode 912 each electrode wires being connected.Control circuit 921 allows analog switch group 927 each switches successively by touching signals sampling resistor 931, be communicated with touch-control driving source 923, allows the rest switch of analog switch group 927 be communicated with touch-control driving source 923 by balance resistance 932; Display screen line electrode 911 and row electrode 912 each electrode wires had both been transmitted touching signals simultaneously, and touch-control detection circuit 925 again each detection display shields the variation of the touching signals of high frequency on a strip electrode line in column electrode 911 and row electrode 912.Touch-control detection circuit 925 is by successively detecting the variation of the touching signals of high frequency on touching signals sampling element 931, judges whether display screen 910 is touched, the position of which electrode wires is touched.By what detect, touched row electrode lines and by the point of crossing of tactile row electrode wires, determined by contact position.Display driver and touch-control are surveyed frequency division multiplexing display screen electrode, form the touch control type flat-panel display that not only can show but also can touch-control.
Above-mentioned touch control type flat-panel display, also can display driver and touch-control survey the mode that timesharing carries out and work:
In the display driver period, analog switch group 927 each switches in driving circuit 920 and touch-control driving source 923 disconnect, signal loading circuit group 926 each signal loading circuit units, only the low frequency display drive signals of display drive source 922 will be derived from, be applied on the display screen line electrode 911 and row electrode 912 each electrode wires being connected, display screen 910 is in display driver state.
At touch-control, survey the period, control circuit 921 is only selected a switch in analog switch group 927 each analog switches at every turn, the touch-control driving source 923 that is communicated with high frequency by touching signals sampling resistor 931, rest switch is also communicated with the touch-control driving source 923 of high frequency by balance resistance 932.Signal loading circuit group 926 each signal loading circuit units, to derive from the mixed signal of low frequency display drive signals and the high frequency touching signals of display drive source 922 and touch-control driving source 923, be applied to simultaneously on the display screen line electrode 911 and row electrode 912 each electrode wires being connected.Control circuit 921 allows signal select again and the display driver state of output circuit 924 is the black or white display drive signals of output, signal loading circuit group 926 each signal loading circuit units, just simultaneously carry low frequencies black or white display drive signals and high frequency touching signals to display screen line electrode 911 and row electrode 912 each electrode wires.Control circuit 921 allows analog switch group 927 each switches successively by touching signals sampling resistor 931, be communicated with touch-control driving source 923, allows the rest switch of analog switch group 927 be communicated with touch-control driving source 923 by balance resistance 932; Display screen line electrode 911 and row electrode 912 each electrode wires had both been transmitted touching signals simultaneously, the variation of the touching signals of high frequency on that strip electrode line being communicated with touching signals sampling resistor 931 in the each detection display screen column electrode 911 again of touch-control detection circuit 925 and row electrode 912.Touch-control detection circuit 925 is by successively detecting the variation of the touching signals of high frequency on touching signals sampling element 931, judges whether display screen 910 is touched, the position of which electrode wires is touched, and display screen 910 is in touch-control acquisition mode.By what detect, touched row electrode lines and by the point of crossing of tactile row electrode wires, determined by contact position.
Allow touch control type flat-panel display 900 intersegmental conversion when display driver period and touch-control are surveyed repeatedly, display driver and touch-control are surveyed time division multiplex display screen electrode, form the touch control type flat-panel display that not only can show but also can touch-control.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (12)
1. a touch control type flat-panel display, mainly by display screen and driving circuit, formed, in driving circuit, comprise again display driver circuit and touch-control detection circuit, display driver circuit has provides the display drive source of display driver energy and signal to select and output circuit, signal in display driver circuit is selected and each output terminal of output circuit, the input end that connects respectively each unit of signal gating circuit or each unit of signal loading circuit, the output terminal of each unit of signal gating circuit or each unit of signal loading circuit, connects respectively each electrode wires of display screen; It is characterized in that:
Each unit of signal gating circuit or each unit of signal loading circuit connect touch-control driving source by one or more circuit paths, signal gating circuit or signal loading circuit allow and are communicated with simultaneously the touch-control of touch-control excitation energy driving source is provided more than two display screen electrode wires, on the circuit paths of each electrode wires of touch-control detection circuit timesharing detection touch-control driving source connection display screen, the variation of touching signals, judges that whether the position of each display screen electrode wires is touched.
2. touch control type flat-panel display according to claim 1, is characterized in that:
Described each unit of signal gating circuit or each unit of signal loading circuit that allows each electrode wires of display screen be communicated with touch-control driving source, to connect touch-control driving source by a circuit paths, touch-control detection circuit connects the variation of touching signals on each electrode wires path of display screen by each unit of detection signal gating circuit or each unit of signal loading circuit, judge that whether the position of display screen electrode wires is touched.
3. touch control type flat-panel display according to claim 1, is characterized in that:
Described each unit of signal gating circuit or each unit of signal loading circuit that allows each electrode wires of display screen be communicated with touch-control driving source, to connect touch-control driving source by many circuit paths, touch-control detection circuit, by the variation of touching signals at least one path in the mulitpath of each unit of detection signal gating circuit or each unit connection touch-control driving source of signal loading circuit, judges that whether the position of display screen electrode wires is touched.
4. touch control type flat-panel display according to claim 3, is characterized in that:
Many the paths that connect touch-control driving source in each unit of described signal gating circuit or each unit of signal loading circuit are to be realized and selected to be communicated with by gating circuit.
5. touch control type flat-panel display according to claim 1, is characterized in that:
Described touch-control detection circuit detects the check point of touching signals, be arranged on the access path of touch-control driving source and each unit of signal gating circuit or each unit of signal loading circuit, or be arranged on the access path of each unit of signal gating circuit or each unit of signal loading circuit and each electrode wires of display screen.
6. touch control type flat-panel display according to claim 5, is characterized in that:
The check point of described detection touching signals is to connect touch-control detection circuit by gating circuit.
7. touch control type flat-panel display according to claim 1, is characterized in that:
The touching signals sample circuit of described touch-control detection circuit, is passive element, or active component, or has the circuit unit of active device.
8. touch control type flat-panel display according to claim 1, is characterized in that:
Described touch-control detection circuit detects and connects the touching signals at least one path in touch-control driving source mulitpath, detection be at least one in current signal and voltage signal.
9. touch control type flat-panel display according to claim 1, is characterized in that:
Described touch-control detection circuit detects and connects the touching signals at least one path in touch-control driving source mulitpath, detection be at least one in amplitude, time, phase place, frequency signal and umber of pulse.
10. touch control type flat-panel display according to claim 1, is characterized in that:
The touch-control driving source of described each electrode wires of connection display screen, can be the same output terminal of same touch-control driving source, can be also the different output terminals of same touch-control driving source, can be also different touch-control driving sources.
11. touch control type flat-panel displays according to claim 1, is characterized in that:
Described touch-control driving source is AC power, also can is alternating current-direct current AC-battery power source, output waveform can be square wave, also can be sinusoidal wave, also can square wave or the stack ripple of sinusoidal wave and direct current, also can be other waveforms.
12. touch control type flat-panel displays according to claim 1, is characterized in that:
Described driving circuit is not less than 50K Hz by signal gating circuit or signal loading circuit to the frequency of the touching signals of each electrode wires output of display screen.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910139906.0A CN101943961B (en) | 2009-07-08 | 2009-07-08 | Drive realization of of touch control flat-panel display |
| PCT/CN2009/075272 WO2011003253A1 (en) | 2009-07-08 | 2009-12-02 | Touch-control flat panel display |
| EP09847004A EP2453339A1 (en) | 2009-07-08 | 2009-12-02 | Touch-control flat panel display |
| JP2012518725A JP2012532389A (en) | 2009-07-08 | 2009-12-02 | Realization of touch flat panel display drive |
| US13/343,414 US20120098776A1 (en) | 2009-07-08 | 2012-01-04 | Implementation of drive of touch flat panel display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910139906.0A CN101943961B (en) | 2009-07-08 | 2009-07-08 | Drive realization of of touch control flat-panel display |
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| Publication Number | Publication Date |
|---|---|
| CN101943961A CN101943961A (en) | 2011-01-12 |
| CN101943961B true CN101943961B (en) | 2014-08-20 |
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| CN200910139906.0A Expired - Fee Related CN101943961B (en) | 2009-07-08 | 2009-07-08 | Drive realization of of touch control flat-panel display |
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| Country | Link |
|---|---|
| US (1) | US20120098776A1 (en) |
| EP (1) | EP2453339A1 (en) |
| JP (1) | JP2012532389A (en) |
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| WO (1) | WO2011003253A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101943961A (en) | 2011-01-12 |
| EP2453339A1 (en) | 2012-05-16 |
| US20120098776A1 (en) | 2012-04-26 |
| JP2012532389A (en) | 2012-12-13 |
| WO2011003253A1 (en) | 2011-01-13 |
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